第二节语法和词汇知识（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
6．Because of the financial crisis, days are gone _ _ local 5-star hotels charged 6,000 yuan for one night.
A. if B. when C. which D. since
7．She is very dear to us. We have been prepared to do it takes to save her life.
A. whichever B. however C. whatever D. whoever
